Home / 128,260.77-176,996.23-71,672.14

Finding the Fourth Proportional to 128,260.77, 176,996.23 and 71,672.14

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Solution

The fourth proportional to 128,260.77, 176,996.23 and 71,672.14 is: 98,905.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,260.77 : 176,996.23 = 71,672.14 : x
  2. Step 2: Convert to fraction form
    128,260.77/176,996.23 = 71,672.14/x
  3. Step 3: Cross multiply
    128,260.77x = 176,996.23 × 71,672.14
  4. Step 4: Simplify right side
    128,260.77x = 12,685,698,576.03
  5. Step 5: Solve for x
    x = 12,685,698,576.03/128,260.77
  6. Step 6: Final answer
    x = 98,905.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.